Dynasties are usually regarded as experiencing consistent success at winning championships over a specific period of time. The 30 years between 1987 and the present definitely disconnects that team from any dynasty that might emerge at Greenback today. Also, dynasties win championships rather than simply appear in them.
If they can put multiple gold balls in the trophy case within the next few years, then they can think about calling themselves a dynasty. I am in no way trying to be rude or show a lack of respect. I just find it laughable that this team that has no gold balls in 30 years thinks it is so much better than everyone else.